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Abstract <p>The new class of recently discovered astrophysical objects—fast blue optical transients (FBOT) demonstrated a high luminosity of radio and X-ray radiation and the expansion velocities above 0.1 c over a year time scale. They are likely sub-class of core-collapse supernova events. We present here results of modeling of particle acceleration in mildly-relativistic shocks associated with FBOTs. It is shown, that objects with mildly-relativistic shocks can be possible sources of particles with energies above 1 PeV, and emit detectable fluxes of hard X-ray radiation.</p>

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Can Fast Blue Optical Transients be Cosmic Pevatrons?

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年6月1日

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  • V. I. Romansky,
  • A. M. Bykov,
  • S. M. Osipov,
  • A. A. Lutovinov

摘要

Abstract

The new class of recently discovered astrophysical objects—fast blue optical transients (FBOT) demonstrated a high luminosity of radio and X-ray radiation and the expansion velocities above 0.1 c over a year time scale. They are likely sub-class of core-collapse supernova events. We present here results of modeling of particle acceleration in mildly-relativistic shocks associated with FBOTs. It is shown, that objects with mildly-relativistic shocks can be possible sources of particles with energies above 1 PeV, and emit detectable fluxes of hard X-ray radiation.